Printer Friendly
Dictionary, Encyclopedia and Thesaurus - The Free Dictionary
1,508,432,120 visitors served.
forum mailing list For webmasters
?
New: Language forums
Dictionary/
thesaurus
Medical
dictionary
Legal
dictionary
Financial
dictionary
Acronyms
 
Idioms
Encyclopedia
Wikipedia
encyclopedia
?

nebular hypothesis
(redirected from Planetary formation)

   Also found in: Wikipedia, Hutchinson 0.49 sec.
nebular hypothesis: see solar system solar system, the sun and the surrounding planets, natural satellites , dwarf planets, asteroids, meteoroids, and comets that are bound by its gravity. The sun is by far the most massive part of the solar system, containing almost 99.9% of the system's total mass.
..... Click the link for more information.
.


How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content.
?Page tools
Printer friendly
Cite / link
Email
Feedback
? Mentioned in ? References in periodicals archive
 
The presumed planet's youth challenges the conventional model of planetary formation, in which dust around a star gathers into ever-larger rocks that crash together and eventually accrete into planets.
Among the projects in the planning stages are: a trip to Mars to retrieve soil samples and bring them back to Earth, a rendezvous with Pluto, an infrared telescope to examine star and planetary formation, a mission to Jupiter's mysterious moon Europa, a trip to retrieve samples from comets, and missions to look for planetary systems resembling the solar system.
A previous analysis of similar data suggested the core took 60 million years to take shape, but the new estimates are in accord with several other lines of evidence, as well as the widely accepted theoretical models of planetary formation.
 
Encyclopedia browser? ? Full browser
 
 
Encyclopedia
?

Disclaimer | Privacy policy | Feedback | Copyright © 2009 Farlex, Inc.
All content on this website, including dictionary, thesaurus, literature, geography, and other reference data is for informational purposes only. This information should not be considered complete, up to date, and is not intended to be used in place of a visit, consultation, or advice of a legal, medical, or any other professional. Terms of Use.